CNC Shield Board:

    Latest Arduino CNC Shield Version 3.0
    GRBL 0.8 compatible. (Open source firmware that runs on  an Arduino UNO that turns G-code commands into stepper  signals)
    PWM Spindle and direction pins
    4-Axis support (X, Y, Z , A-Can duplicate X,Y,Z or do a  full 4th axis with custom firmware using pins D12 and  D13)
    Coolant enable
    Uses removable A4988 or DRV8825 compatible stepper  drivers
    Compact design.
    Stepper Motors can be connected with 4 pin molex  connectors or soldered in place.
    Runs on  12-36V DC. (At the moment only the DRV8825 drivers can  handle up to 36V so  please consider the operation voltage when powering the  board.)
    Please note that this is an unassembled kit and Basic soldering skills are needed

Arduino UNO R3 Board:

    MCU: ATmega328
    USB interface: ATmega16U2
    Operating voltage: 5V
    Digital I/O pins: 14 (including 6  with PWM capability)
    Analog input pins: 6
    I-I/O pin output current: 40mA max
    3.3V output current: 150mA max
    Flash memory: 32 kB (0.5kB used by  bootloader - included)
    Static RAM (SRAM): 2 kB
    EEPROM: 1 kB
    Clock speed: 16MHz

A4988 Stepper Motor Driver:

    A4988 Stepper Motor Driver Board is a  breakout board for Allegro’s A4988 DMOS Micro stepping  Driver with Translator and Overcurrent Protection;  please read the A4988 datasheet carefully before using  this product.

    Low RDS (On) Output
    Automatic current decay mode  detection / selection
    Mix with slow current decay modes
    Synchronous rectification for low  power dissipation
    Internal UVLO
    Crossover-current protection
    3.3 and 5 V compatible logic supply
    Thermal shutdown circuitry
    Ground fault protection
    Load short-circuit protection
    Five selectable step modes: full,  1/2, 1/4, 1/8 and 1/16
    Warning: Connecting or  disconnecting a stepper motor while the driver is  powered can destroy the driver. (More generally,  rewiring anything while it is powered is asking for  trouble).

All above

UNO R3 + CNC Shield V3 Expansion Board + 4pcs A4988

Package included:

- 1x UNO R3 CH340 (with cable)
- 1x CNC Shield
- 4x Stepper Driver A4988 inkl. Kühlkörper & Pad
Depends on your chioce!